William diebel



2 Sheets-Sheet 1.

(No Model.)

W. DIBBEL.

STOP MOTION MECHANISM FOR KNITTING MACHINES.

Patented June 5,1883.

Q Y WITNESSES BY MM/V v ATTORNEYS.

2 SheetsShe et 2.

(No Model.)

W. DIEBEL.

STOP MoTIoN MECHANISM FOR KNITTING MAGHINES.

oo 8 m 5 I M V r J "II n W 1 H H t I IIH/ a P N h HM HM I I I. I A M II1 I II H I ./I H flm I I I I A.. H MN. /W 3; .IMI w W F 2 M I WITNESSES:

UNITED f STATES 1 PATENT OF CE.

SARAH A. com,

OF SAHE PLACE;

STOP-MOTION MECHANISM FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 278,894, dated June 5,1888.

Application filed October 7, 1882. (No model.)

To all whom it may concern;

Be it known that 1, WILLIAM DIEBEL, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and usefulImprovement in Stop-Motion Mechanism for KnittingMachines, of which thefollowing is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecoresponding parts in all the figures.

Figure}, Sheet 1, is a plan view of my improvement, partly in section.Fig. 2, Sheet 1, is a sectional elevation of a part of the same, takenthrough the line {1 y, Fig. 1. Fig. 3, Sheet 2, is a side elevation ofthe same, parts being broken away and parts being shown in sectionthrough the line .1 .r, Fig. 1. Fig. 4, Sheet 2, is a sectionalsideelevation of a part of the same enlarged. Fig. 5, Sheet 2, is a sideelevation of the clutclrlever catch and other parts immediatelyconnected or operating therewith, and showing the clutch-lever insection. Fig. 6, Sheet 2, is a plan view of the trip-bar standard. Fig.7, Sheet 2, is a side elevation of the upper part of the same. Fig.

'8, Sheet 2, is a plan view of the inner end of the trip-bar. Fig. 9,Sheet 2, is a sectional side elevation of a part of the invention,showing the relative position of the fingers to the fabric whenthemachine is in operation.

The object of this invention is to stop knitting-machines automaticallyshould a hole occur in the fabric; and to this end it consists in thepeculiar construction and arrangement of parts, as hereinafter fullydescribed, and poi nted out in the claims.

A represents the cam-cylinder, and A is the needle-cylinder, which isconnected with the table B and the drive-shaft O by the ordinarygearing.

D is the ordinary lever for throwing the gearing into and out of gear.The lever D is fulcrumed to a bolt attached to the table B or to theframe of the machine. The inner end of the lever D, or a small rollerpivoted to the said end, enters an annular groove in the hub of agear-wheel placed upon the drive-shaft C, and connected therewith by atongue and post, E, to the upper end of which is adjustbly secured by astud, F, and set-screws G H, orother suitable means, the end of an arm,I, which is made of such a length that the eye formed inits otherendwill be directly over the center of the needle-cylinder A.

111 the eye of the arm I is'secured, by a set screw, J, the upper partot'a vertical rod, K,

to the lower end of which is journaled a circa lar plate, L, which iskept in place by collars M and the plate U, attached to the said rod, orby other suitable means. The collar M is secured to the rod K by aset-screw, and the plate I has a collar, N, formed upon or attached toit, through .which the set -screw passes that secures the said plate andcollar to the said rod K.

In radial holes in the edge of the plate L are secured by set-sorews 0 anumber of radial tubes, P, in each of which is inserted a pin, Q, whichis held outward by a spiral spring, t, inserted between its inner endand the inner end of the hole in the plate L. The outer end of the pin Qrests against the square inner end of the finger S inserted in avertieallongitudi; nal slot in the outer part of the tube P, and hinged in placeby a cross-pin passing through the said tube P near the upper corner ofits inner end.

Upon the lower side of the finger-S is formed a downward projection, S,which, when the said finger S drops down, enters between and engageswith the needle-guides T of the needlec ylinder A. Upon the lower sideof each finger S, at a little distance from its outer end, is formed ashort projection or stud, S, which I prefer to make cylindrical in formand with a. beveled end, as shown in Fig. 4., and which, when themachine is in use, rests and slides upon the inner surface of thefabric, so as to drop through any hole that may occur in the saidfabric, and thus cause the projection S to engage with the needle-guidesT, so that the needle cylinder A will carry the plate L around with itin its revolution.

' finger to move upon.

Upon the lower side of the inner end of each finger Sis formed adownward projection, S, which, when the projection S drops through ahole in the fabric, drops into a notch, U, in a plate, U, attached to orformed upon the cenar N, or otherwise secured to the rod K, so as to beheld stationary. The notches U are made with their rear sides radial andtheir forward sides inclined, as shown in Fig. 1, so that as the plate Land fingers S are carried around by the cylinder A the projection S ofth'eengaging finger will slide along the inclined side of the notch U,and will thus raise the said finger away from the fabric and from theneodle-cylinder A.

The hinged fingers S can be held away from the needlecylinder A byturning the said fingers into a vertical position, so that the ends ofthe pins Q will rest against the upper side edges of the said fingers,and thus hold the fingers in a vertical position.

To the inner surface of the cylinder A, at a little distance from itsupper edge, is secured a band, Y, in such a position that its upper edgewill be a little below the upper edge of the said cylinder to supportthe fabric, limit the downward movement of the finger S, and form atrack for the projection S of the hinged To the upper side of thecircular plate L is attached a short post, XV, the upper end of whichhas a wide groox'e formed across it to re eeive the end of the bar X andprevent the said bar from turning upon the said upper end of thestandard. The bar X is secured to the end of the standard by ascrew-bolt, as shown in Figs. 1 and 3. The outer end of the barX restsupon a cross head, Y, attached to or formed upon a post, Z, secured tothe table B.

a is a rod which passes up through a hole in the cross-head Y, and has anotch, a, formed in its side to receive the bar X. so that it will beheld up by the said bar X.

Upon the rod a is placed a spiral spring, I), the upper end of whichrests against the lower side of the cross-headY. Thelower end of-thespiral spring I) rests against an arm or pin, a attached to the rod (1,and which projects so that its end will enter a groove, 0, in the sideof the post Z, andthus limit the movements of the said rod a. The rod apasses downthrough a guide-hole in the table B, and its lower end whichis pivoted to a support attached to the under side of the said table B.

The outer end of the trip-lever (1 projects at the side of the table Band rests beneath the "'free"e'11d of the catch 0, which is pivoted tothe edge of the said table B, or to some other suitable support, in sucha position as to engage with and hold the lever D, and thus hold thedriving mechanism in gear. The lever D, when released from the catch 0,is moved to throw the driving mechanism out of gear by a spiral spring,f, one end of which is attached to the said lever and its other end isattached to the table B or some other suitable support." YVith thisconstruction, whenthe projection S ofone of the fingers S enters a holein the fabric, allowing the projection S of the said finger to engagewith the needleguides T, so that the needle-cylinder Awill carry theplate L around with it, throwing the bar Xout of engagement with the rod(1, the said rod is forced down ward by its weight, and by the action ofthe spring I), and operates the lever d to trip the catch 6 and releasethe lever D, which is illstantly moved by the spring fto throw themachine out of gear and stop it, so that the defeet in the fabric can beremedied.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patentl. The combination, with the needle-cylinder,the plate L, adapted to be rotated, the hinged fingers S, provided withthe projections S S S, and the springs R, for holding the fingers in thedesired position, of the stationary plate U, having angular notches U inits rim, and means, substantially as herein shown and described, forrotating the needle-cylinder and supporting the plates U L, as setforth.

2. The combination,withthe cylinder A and the hinged fingers S, havingprojections S S S, of the band V, the plate L, and meansfor supportingthe same, substantially as herein shown and described.

8. The hinged fingers S,1nade substantially as herein shown anddescribed, with the projections S S 8*, as set forth.

WM. DIEBEL.

Vitnesses:

J one: T. Tnonrsox rests upon the inner end of the trip lever d,

CLARLES B. GUNN.

